Rotary pump.



P. GHRIsT/MN.v

ROTARY PUMP.

ABBLIOATION FILED MAY a, 1913.

Patented Apr. 7, 1914 2 SHEETS-SHEET 1,.

@QQ/@0G60 n., @UU/QD L www y@ Q P. CHRISTMAN.

ROTARY PUMP.

APPLICATION FILED MAY s, 1913.

LOQQJ 3%., Patented Apr. 7', 1914 2 SHEETS-SHEBT 2.

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rerun cHnisrMAN, or GREEN BAY, wrsooNsrN,

. ROTARY PUMP.

.Application inea Nay a; 1913. semi 110,766,370.

Specication of Letters Patent.

'Patented Apri. 7, 1914.

YTo all whom it may concern Be it known that 1, PETER CHRISTMAN, a

lcitizen of the United States, residing at `Grreen Bay, in the county ofBrown and State of Wisconsin, have invented certain new and usefullmprovements in Rotary Pumps; and ll do declare the following to bea'full, clear, andpexact description of the i invention, suchvas willenable otherseskilled in the art to which lit appertains to make Ia-nd.-use the same.

'This invention relates to pumps, and more vespecially.tovthose whichrotate, and the object oflthe vsame is to pro-duce a pump of thischaracter having a non-rotary circular orcylindrical cylinder whichmay-be sub-` merged, and arotaryeccentrcally mounted pistonhaving twowings which are revolved? within the cylinder. to force the water up-award. This object is carried out by con-1 structing the pump in detailin the manner' hereinafter more fully described -andi claimed, and asshown in the ydrawings whereinv v v Figure 1 is a side elevation of thelower;

` portion of this pump, and a sectional viewt through the lower end ofthe outlet piped` Figs. 2 and 3 are enlarged cross sections on the line2-2 of Fig. 1, showing the internal' :parts in dierent positions. Fig. 4is a ver` tical sectional-view of the pump. Fig. 5 is anenlarged bottomplan view of the cap.; Fig. 6 is an enlarged plan View of the plug. Thecylinder 1 of this pump stands upright, is provided alongone side with aseries of inlet ports 2, and has its lower end closed by a plug 3 whoseupper face contains a central socket 4 and an eccentric vgroove 5. Theupper end of the cylinder is closed by a cap 6 which is preferablyscrewed onto the cylinder as shown, and

through this cap is an eccentric opening surrounded' by a nipple 7 towhich the suspension pipe 8 is screwed. ll may here say that this pipe4carries the entire pump and by it the cylinderis depressed to asuitable point belowthe water level, so that cool water may betaken inthrough the ports 2 and passed up the pipe 8 to a suitable nozzle orother point of use not necessary to show.

rlhe ,piston 11 is cylindrical and of a proper size to sit at its lowerend into the groove 5, when one side of the piston rests againstl theinner face of the cylinder ata point 12 just in. advance of the row of'ports 2; and the'upper end of the piston is journaled inthe eccentrichole through the .cap, and. preferably within a packing 13 car- .riedtherein asfshown.

sary to illustrate. ,The walls of the piston at diametrically oppositepoints are provided with upright slots 18 and 19 whose edges are 70 irounded as shown.

-Seated in the socket 4 is a pin 20 which rises Yalong the-true axis ofthe cylinder Vl but is disposed eccentrically within the pis- -ton 11 asshown, and hinged at 21 on this rod or pin is a air of abutments 22 and23, each having its forward side dished or -:cut away as at `24, itsouter edge rounded so as to t within the cylinder, and its side .facesadjacent said rounded edge packed as at 25. rThe length or height ofthese, abutments is the same as the length of the slots `18 and 19,their thickness corresponds to the width of said slots but their packededges 25 will fit the slots closely, and their radial dimensions aresuch that they extend from the pin or rod 2O outward to waterrtightcontact with the interior of the cylinder 1.

The parts constructed as above described are assembled as shown in thedrawings, and the lower end of the suspension pipe 8 carrying this pumpis let down into the water to a suitable point, and rotaryy powerapplied to theshaft 17. When nowthe piston revolves in the direction ofthe arrow until its slots 18; and 19 are directly in alinement with thecenter of the pin or rod y20, the abutments or wings 22 and 28"stand indirect-alinement with eachother and opposite the point 12, and adjacentthis point the packed edge 25 of the wing 23 will close the fslot 19water-tight whereas the opposite wing `22 projects for a considerabledistance through the other slot 18 as shown. 1f now the piston continuesto rotate in the direction of the arrow, all the water therein forwardof said wing 22 must pass through its dished face 24, the slot 18, andinto the interior of the piston,` whence it passes-upward through the"coupling and out itsports 15, and thence' on upward throughthesuspension pipe 8. vMeanwhile the other abutment has moved from thepoint l2 past the inlet ports 2, and the space behind it is growingconstantly larger so'that it adi'nits a fresh charge of water behind it,while the charge of water ahead of it is subjected. to the action justdescribed.

Attention is invited to the fact that, owing to the peculiar dispositionof parts, when the abutments stand diametrically opposite each other theone whose outer edge stands at the point 12 is moving quite slowlyandthe opposite abutment quite rapidly. The result isl that thelast-named abutment will rapidly eject the charge of water ahead of it,and as it is doing so draws farther and farther inward in the slot inthepiston through which it projects, until finally its packededge 25closes said slot to the passage of any further water. Meanwhile theother abutment which started at the point 12 moves rather slowly untilit passes the inlet ports 2, and from there on it moves with increasingvelocity to a point opposite the point 12, so` that a fresh charge ofwater is sucked in through the inlet port because the back of this'abutment is closed to the outlet through its own slot, while the waterforward of it during this motion is forced to pass through its dishedface and slot and upward through the outlet. A rotary pump constructedas described may be made of the desired materials and to the properproportions, and it needs no lubrication because the partswhich moveover each other are constantly submerged and always wet. A littleexperience lwill develop the proper speed of rotation which does themost effective work without churning the water or unduly agitating itnear the bottom of a stream or well.

l/Vhat is claimed as new is: 1. In a rotary pump, the combination withan upright cylinder pierced with a row of inlet ports along one side,aplugclosingits awing-hinged on saidpi-n and projecting through said slotin contact with the wall of the cylinder and dished in its front face.

2. In a rotary pump, the combination with I an upright cylinder providedwith an inlet opening in one side, a plug closing its lower end, a capclosing its upper endand having an olf-center opening, and an outletpipe leading upward therefrom; of a pin upstanding from the plug, aneccentric rotary piston inclosing said pin and contacting with the wallof the cylinder just in advance of said inlet, the piston having anupright slot through its wall, means for rotating said piston, and awing hinged on said pin and projecting through said slot in contact withthe wall of the cylinder, the front face of said wing in thedirection'of rotation being dished and its front and rear faces at itsouter edge being packed, for the purpose set forth. i

3. In a rotary pump, the combination with an upright cylinder piercedwith a row of inlet ports along one side, a plug closing its lower endand provided with a central socket and an eccentriccircular groove, acap closing its upper end and having yan eccentric nipple, and an outletleading upward from the nipple; of a pin seated in said socket, aneccentric rotary piston inclosing said pin and seated in said groove,its outer face oo ntacting with the wall of the cylinder just in advanceof said row ofports, the piston having opposite upright slots throughits wall, means leading out the outlet pipe for rotating said piston,and wings hinged on said pin and projecting through said slots incontact withA the wall of said cylinder, the front facesfof said wingsin the direction of their rotationl being dished. l

4. In a rotary pump, the combination with an upright cylinder piercedwith a row of inlet ports along one side, a plug closlng its lower endand provided with a central socket and an eccentric circular groove, acap closing its upper end and having an eccentric' nipple, and an outletpipe leading upward from the nipple;v of a pin seated in said socket, aneccentric rotary piston inclosing said pin and seated in said groove,its outer face contacting with the wall of said cylinder just in advanceof said row of ports, the piston having opposite upright slots throughits wall, a coupling screwed into the upper end of the piston and havinglateral outlet ports communicating with said outlet pipe, a ro-d withinthe latter connected with said coupling for rotating the piston, andwings hinged on the pin and projecting through said slots and havingrounded outer edges making Contact with the wall of the cylinder, thefront face of each wing in the direction of rotation being dished andits front packed, for the purpose set forth.

Aand rear faces along its outer edge being In testimony whereof I havehereunto set my hand in presence of two subscribing witnesses.

PETER cHRIsTMAN.

Witnesses;

HAZEL DENEssEN, CHAs. K. BoNG.

